# Learn Erlang Programming vs DEC Opcodes

The clearest difference is price: DEC Opcodes at Free against Learn Erlang Programming's $1.99. DEC Opcodes also leads on rating (5.0 vs 4.5) and update cadence (every 8 days vs every 24 months). Learn Erlang Programming's advantage is in-app purchases (none vs 1) and iOS requirement (13.0 vs 18.0). On ratings volume, ads and device support there is nothing between them.

DEC Opcodes is free to download; Learn Erlang Programming costs $1.99 up front. DEC Opcodes sells 1 one-off in-app purchase. Learn Erlang Programming asks for nothing beyond the download.

DEC Opcodes holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

Learn Erlang Programming ships an update every 24 months, DEC Opcodes every 8 days. The most recent releases landed on September 28, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Learn Erlang Programming | DEC Opcodes |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/learn-erlang-programming/id1634383128/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/dec-opcodes/id6760246055/reviews)** |
| Number of ratings | 2 | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 8 days** |
| Monetization | Paid | **Free** |
| Size | 36 MB | 42 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Muhammad Mubeen](https://appshunter.io/developer/1553722821) | [John Kennedy](https://appshunter.io/developer/284943103) |

## What reviewers say

### Learn Erlang Programming

[App page](https://appshunter.io/ios/app/learn-erlang-programming/id1634383128)

Master the Erlang programming language to build highly available, scalable soft real-time systems. This app provides a solid understanding of Erlang's core concepts, including concurrency, distribution, and fault tolerance, essential for industries like telecoms and e-commerce.

**Highlights:** Understand Erlang programming language, Build scalable soft real-time systems, Learn about high availability, Explore concurrency and distribution, Grasp fault tolerance concepts, Study functional programming principles

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### DEC Opcodes

[App page](https://appshunter.io/ios/app/dec-opcodes/id6760246055)

Explore the instruction sets of legendary DEC computers like the PDP and VAX. This app provides detailed information on each instruction, historical context, and interactive lessons. Discover the machines that shaped modern computing.

**Highlights:** Instruction set reference, Historical context and photos, System specifications, Interactive assembly lessons, Search and filtering, Customizable themes, Simple assembler

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy Me a Coffee | $0.99 | one-time |


## Frequently asked questions

### Is Learn Erlang Programming free?

Learn Erlang Programming costs $1.99, with no in-app purchases.

### Is DEC Opcodes free?

DEC Opcodes is free to download, with in-app purchases available.

### Which has better reviews, Learn Erlang Programming or DEC Opcodes?

DEC Opcodes is rated higher. Learn Erlang Programming averages 4.5 out of 5 from 2 ratings, while DEC Opcodes averages 5.0 from 3 ratings.

### Do Learn Erlang Programming or DEC Opcodes have ads?

Neither Learn Erlang Programming nor DEC Opcodes shows ads.

### Which is updated more often, Learn Erlang Programming or DEC Opcodes?

Learn Erlang Programming ships an update every 24 months, and DEC Opcodes every 8 days. Most recently, Learn Erlang Programming was updated on September 28, 2026 and DEC Opcodes on October 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*